Igniting composition for matches.



ETMTEE TATES earnin enrich.

LOUIS STANGE, OF AACHEN, GERMANY, ASSIGNOR TO THE CHEMICAL INDI'S'IRIAI, SYNDI- CATE LIMITED, OF

LONDON, ENGLAND IGNITING coMPosITIoN FOR MATCHES.

Application filed July 31,

= vented certain new and useful Improvements in Igniting Compositions for Matches, of

which the following is a specification.

This invention relates to improvements m the manufacture of matches and igniting surfaces therefor, the object being to produce compositions for mechanically igniting ma terial and for igniting surfaces for safety matches, without the use of phosphorus.

In manufacturing ordinary friction-igniting matches it is customary to use hoshorus or its compounds with sulfur as ignitmg agents; in the same way, in producing igniting surfaces for safety matches, amorphous phosphorus is used in the compositlon.

This invention consists in the employment. of certain diazo compounds as a substitute for phosphorus and its compounds in compositions either for friction igniting matches or for producing friction surfaces for safety matches. The explosive and combustible pro erties of some diazo compounds are alrea y known and hitherto it has been suggested to em loy such compounds in percussion caps an fuses, but it is now found that phosphorus and its compounds with sulfur in igniting compositions, and amorphous phosphorus in igniting surfaces for safety matches, can be effectively replaced by certain nonpoisonous stable diazo com ounds such as anhydrous diazobenzenesul onic acid, rovided all the ingredients, including the dlazo compounds, are employed in a neutral state in t e absence of any metals or metallic salts.

A diazo comppund which can be em loyed according to t 's invention mustfu til the following conditions :(1.) It must be a stable compound which does not high a molecular Weight. (2.) t must not be easily soluble in water. -(3.) It must be obtainable in a solid state, perfectly free from metallic salts and perfectly free from acid; for any adherent acid would destroy the glue which is the only practical adhesive ingredient for match-heads. (4.) It must be capable of igniting by friction when mixed with the agents usually employed with phoshorus in the manufacture of match-heads. t can readily be determined by preliminary tests whether or not a particular diazo com- Specification of Letters Patent.

ossess too Patented Aug. 10, 1909.

1906. Serial No. 328.565.

f pound will serve the purposes of this inventlon. It is found that the cheapest and most useful representative of the whole series for this lpurmse is anhydrous diazobenzenesulfonic acid.

The followingis an example of a composi l tion suitable for the production of matchheads and embodying this invention: 7

lira 711 pic I If (i ll Yielding 150 ig ni t i n g c 0 mp osit-ion.

In manufacturing a paint or coating for producing igniting surfaces for safety matches, the following composition m a y, for example, be employed.

Example I I 20 parts by weight of pow d e red glass.

20 antimony sulfid.

40 anhydr 0 us d i a z obenzenesulfonic acid.

10 gum arabic.

water.

Yielding 150 'com p o sition for painting the friction surfaces of safety match-boxes and the like.

In view of the nature of the diazo compounds, the tom crature of the mass during the processes 0 mixing grinding, dipping, etc. must be kept below F. and the drying rooms for matches produced by tlns process must also be maintained below this temperature. Matches manufactured with these precautions, when perfectly dry, can withstand any temperature up to 160 F. and do not absorbmoisture when exposed to a damp atmosphere.

It is to be understood that I do not confine myself to the ingredients mentioned as additions to the diazo compounds or to the proportions in which they are mixed, as known alternatives to these additional substances may be used without departing from this invention.

What I claim as my invention and desire to secure by Letters Patent is 1. The herein described igniting composition for matches comprising a solid inorganic oxidizing salt, powdered glass, sulfur, antimony sulfid, glue, and diazo-benzene sulfoniogacid.

2. The herein described igniting composition for matches comprising a solid inorganic oxidizing salt, powdered glass, sulfur,

antimony sulfid, glue, and anhydrous diazobenzene sulfonic acid.

3. The herein-described igniting composition for matches comprising chlorate ofv potassium, powdered glass, sulfur antimon sulfid, glue, anhydrous diazo-benzenesu Weight of anhydrous diazo-benzenesulfonic acid and 50 parts by weight of water.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

LOUIS STANGE. Witnesses:

WILLIAM J. REUTERS, HENRY QUADFLIEG. 

